• C0 Central Nervous System
  • C2 Heart
  • C5 Veins
  • C7 Lymphatic and Hematologic System
  • C8 Eye
  • C9 Ear, Nose, Mouth and Throat
  • CB Respiratory System
  • CD Gastrointestinal System
  • CF Hepatobiliary System and Pancreas
  • CG Endocrine System
  • CH Skin, Subcutaneous Tissue and Breast
  • CP Musculoskeletal System
  • CT Urinary System
  • CV Male Reproductive System
  • CW Anatomical Regions